Define date format on account level

Hi all, I know it is possible to define a date format on language level and we currently use that to support two different date formats in our app.    Now I am wondering if it possible to just allow a user to choose a date format and use that one in the entire app for the user instead of the one linked to the language of the user.  I would like to stay away of defining ‘fake’ languages just to support more date formats.   Does anyone have a good solution for this issue?
1 answers

As far as I know this isn’t possible out-of-the-box.

Sounds to me as a nice idea :-D